<template>
  <div class="login">
    <div class="layui-container fly-marginTop">
      <div class="fly-panel fly-panel-user" pad20>
        <div class="layui-tab layui-tab-brief" lay-filter="user">
          <ul class="layui-tab-title">
            <li class="layui-this">
              <router-link to="/login">登入</router-link>
            </li>
            <li>
              <router-link to="/regist">注册</router-link>
            </li>
          </ul>
          <div class="layui-form layui-tab-content" id="LAY_ucm" style="padding: 20px 0;">
            <validation-observer ref="observer" v-slot="{validate}">
              <div class="layui-tab-item layui-show">
                <div class="layui-form layui-form-pane">
                  <form method="post">
                    <div class="layui-form-item">
                      <label for="L_email" class="layui-form-label">用户名</label>
                      <validation-provider name="username" rules="required|email" v-slot="{errors}">
                        <div class="layui-input-inline">
                          <input
                            type="text"
                            name="username"
                            v-model="username"
                            placeholder="请输入用户名"
                            autocomplete="off"
                            class="layui-input"
                          />
                        </div>
                        <div class="error layui-form-mid">
                          <span style="color: red;">{{errors[0]}}</span>
                        </div>
                      </validation-provider>
                    </div>
                    <div class="layui-form-item">
                      <label for="L_pass" class="layui-form-label">密码</label>
                      <validation-provider
                        name="password"
                        rules="required|min:6|max:16"
                        v-slot="{errors}"
                      >
                        <div class="layui-input-inline">
                          <input
                            type="password"
                            name="password"
                            v-model="password"
                            placeholder="请输入密码"
                            autocomplete="off"
                            class="layui-input"
                          />
                        </div>
                        <div class="error layui-form-mid">
                          <span style="color: red;">{{errors[0]}}</span>
                        </div>
                      </validation-provider>
                    </div>
                    <div class="layui-form-item">
                      <validation-provider
                        ref="code"
                        vid="code"
                        name="code"
                        rules="required|length:4"
                        v-slot="{errors}"
                      >
                        <div class="layui-row">
                          <label for="L_vercode" class="layui-form-label">验证码</label>
                          <div class="layui-input-inline">
                            <input
                              type="text"
                              name="code"
                              placeholder="请输入验证码"
                              v-model="code"
                              autocomplete="off"
                              class="layui-input"
                            />
                          </div>
                          <div class>
                            <span style="color: #c00;" class="svg" v-html="svg" @click="_getCode()"></span>
                          </div>
                        </div>
                        <div class="error layui-form-mid">
                          <span style="color: red;">{{errors[0]}}</span>
                        </div>
                      </validation-provider>
                    </div>
                    <div class="layui-form-item">
                      <button
                        class="layui-btn"
                        lay-filter="*"
                        type="button"
                        @click="validate().then(submit)"
                        lay-submit
                      >立即登录</button>
                      <span style="padding-left:20px;">
                        <router-link to="/forget">忘记密码？</router-link>
                      </span>
                    </div>
                    <div class="layui-form-item fly-form-app">
                      <span>或者使用社交账号登入</span>
                      <a
                        href
                        onclick="layer.msg('正在通过QQ登入', {icon:16, shade: 0.1, time:0})"
                        class="iconfont icon-qq"
                        title="QQ登入"
                      ></a>
                      <a
                        href
                        onclick="layer.msg('正在通过微博登入', {icon:16, shade: 0.1, time:0})"
                        class="iconfont icon-weibo"
                        title="微博登入"
                      ></a>
                    </div>
                  </form>
                </div>
              </div>
            </validation-observer>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import { ValidationProvider, ValidationObserver } from 'vee-validate'
import { getCode, login } from '@/api/login'
import uuid from 'uuid/dist/v4'
export default {
  name: 'login',
  data () {
    return {
      username: '',
      password: '',
      code: '',
      svg: ''
    }
  },
  components: {
    ValidationProvider, ValidationObserver
  },
  mounted () {
    window.vue = this
    let sid = ''
    if (localStorage.getItem('sid')) {
      sid = localStorage.getItem('sid')
    } else {
      sid = uuid()
      localStorage.setItem('sid', sid)
    }

    this.$store.commit('setSid', sid)
    this._getCode()
  },
  methods: {
    _getCode () {
      const sid = this.$store.state.sid
      getCode(sid).then((res) => {
        if (res.code === 200) {
          this.svg = res.data
        }
      })
    },
    async submit () {
      const isValid = await this.$refs.observer.validate()
      if (!isValid) {
        return
      }
      login({
        username: this.username,
        password: this.password,
        code: this.code,
        sid: this.$store.state.sid
      }).then((res) => {
        if (res.code === 200) {
          res.data.username = this.username
          this.$store.commit('setUserInfo', res.data)
          this.$store.commit('setIsLogin', true)
          this.$store.commit('setToken', res.token)
          this.username = ''
          this.password = ''
          this.code = ''
          requestAnimationFrame(() => {
            this.$refs.observer.reset()
          })
          this.$router.push({ name: 'index' })
        } else if (res.code === 401) {
          // this.$refs.observer.setErrors({
          //   code: [res.msg]
          // })
          this.$refs.code.setErrors([res.msg])
        } else if (res.code === 500) {
          this.$alert('用户名不存在，请重新输入')
        } else if (res.code === 404) {
          this.$alert(res.msg)
        }
      }).catch((err) => {
        const data = err.response.data
        if (data.code === 500) {
          this.$alert('服务器链接错误')
        }
        console.log(err)
      })
    }
  }

}
</script>
<style lang="scss" scoped>
.svg {
  position: relative;
  top: -4px;
}
</style>
